Ответ:

  1. √(16,4²) = |16,4| = 16,4.
  2. √((-1,37)²) = |−1,37| = 1,37.
  3. ¼√(84²) = ¼ · |84| = 84/4 = 21.
  4. −2,6√((-5)²) = −2,6 · |−5| = −2,6 · 5 = −13.